Links for serial lamp supports



MaY 3, 1932- y A H. LAUR y 1,857,109

LINxsFoR SERIAL LAMP SUPPORTS Filed March 29, 1950 [aren/0r.-

Patented May 3, 1932 oFFlcE i* HERMANN LAUR, F KEHL, GERMANY LINKS FORSERIAL LAMP SUPPORTS Applicatonriled March 29, 1930, Serial No. 440,120,and in Germany May 5, 1929.

The present invention relates to a lighting chain consisting of joinedlinks and serving as lamp support for advertising, decorative or similarpurposes, the links being made from pressed insulating material andcontaining the conductors while the lamp socket is arranged in the axisof rotation.

Compared with existing arrangements of this sort the chain according tothe invention is superior for the reason that the lamp sockets establishboth the mechanical and the electrical connection between two chainlinks so that it becomes possible to produce chains of any desiredlength on the spot simply by combining the links and inserting the lampsin their common pivots without requiring special auxiliary means.Moreover, various eects may be produced by the combination andarrangements of the chains so obtained.

One form of the invention is illustrated in the accompanying drawings,in which Figure 1 is a longitudinal section of a' chain link; Fig. 2, atop view thereof; Fig. 3, a longitudinal section of a chain consistingof three links with lamps inserted therein; and Fig. 4:, a view of anilluminated letter produced by means of a chain according to theinvention. c

Referring to the drawings, the link made from pressed insulatingmaterial possesses a body l forming on one end the fork 2 and on theother a projection 3 fitting between the ends of the fork of anadjoining link.

The upper end of the fork is perforated to receive the lamp socket whichis passed through it, and the lower fork end has a cuplike indentation4: wherein ends a contact blade 5 embedded in the body of the link. Theother end of the blade is connected to a metallic female thread 6inserted in the projection 3.

The body 1 contains also a plug socket 7 extending transversely to theContact blade and coming in touch therewith and a terminal screw 8leading to the Contact blade. In said socket the terminal plugs of anelectric supply wire may be inserted and fastened by means of the screw8. When two linksare to be assembled, the projection 3 of one link screw6 of the projection 3 andl with its cen'- |515` ter contact rests in theindentation on the elastic end of the contact blade 5.

Attachment to the base takes place by means of clips secured by screwsor nails as incase of electric conduits.

In a lighting chain comprising links serving as lamp supports and asmeans for connecting the lamps in series, each link comprising anelongated body portion of insulating material, said body portion beingforked at one end and having a reduced extension at the other end, thereduced extension of on'e link fitting between the Vforked parts of anadjacent link; the extension and one of the forked parts beingperforated, the other forked part having a recess; and an electricalconductor extending from the bottom of said recess to the perforation inthe extension and forming a conducting Wall for said perforation.

HERMANN LAUR.

